Coordinated Electric Vehicle Charging with Reactive Power Support to Distribution Grids
Coordinated Electric Vehicle Charging with Reactive Power Support to Distribution Grids
复制标题
为配电网提供无功功率支持的协调电动汽车充电
DOI：
10.1109/tii.2018.2829710
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发表时间：
2019
影响因子：
12.3
通讯作者：
Myers, Kurt S.
中科院分区：
文献类型：
--
作者：
Wang, Jingyuan;Bharati, Guna Ratna;Paudyal, Sumit;Ceylan, Oguzhan;Bhattarai, Bishnu Prasad;Myers, Kurt S.
我们开发分层协调框架，以优化管理空间分布的电动汽车（EV）数量的有功和无功功率调度，并考虑配电网水平限制。该框架由详细的数学模型组成，有利于相关实体的运营，即电网运营和电动汽车充电。第一个模型包括配电网层面的综合最优潮流模型，而第二个模型则代表了详细的最优电动汽车充电以及对电网无功功率的支持。我们展示了使用具有大量电动汽车（超过 5000 辆）的 33 节点配电馈线协调调度电动汽车有功和无功功率的好处。案例研究表明，在受限的配电网中，与单位功率因数相比，如果在非单位功率因数模式下充电，协调充电可以降低电动汽车充电的平均成本。同样，结果还表明，如果电动汽车充电以非单位功率因数模式（与单位功率因数相比）进行，则配电网可以容纳数量增加的电动汽车充电。
We develop hierarchical coordination frameworks to optimally manage active and reactive power dispatch of number of spatially distributed electric vehicles (EVs) incorporating distribution grid level constraints. The frameworks consist of detailed mathematical models, which can benefit the operation of both entities involved, i.e., the grid operations and EV charging. The first model comprises of a comprehensive optimal power flow model at the distribution grid level, while the second model represents detailed optimal EV charging with reactive power support to the grid. We demonstrate benefits of coordinated dispatch of active and reactive power from EVs using a 33-node distribution feeder with large number of EVs (more than 5000). Case studies demonstrate that, in constrained distribution grids, coordinated charging reduces the average cost of EV charging if the charging takes place at nonunity power factor mode compared to unity power factor. Similarly, the results also demonstrate that distribution grids can accommodate charging of increased number of EVs, if EV charging takes place at nonunity power factor mode compared to unity power factor.